¹ Source: wiktionary.com
Definition of Allethrins
1. allethrin [n] - See also: allethrin
Medical Definition of Allethrins
1. Allethrolone esters of chrysanthemum-monocarboxylic acids and synthetic analogs of pyrethrins, which are pyrethrolone esters of the same acids; viscous liquids, insoluble in water, that can be absorbed by lungs, skin, and mucous membranes and may cause liver and kidney injury, with lung congestion; used as an insecticide. (05 Mar 2000)